fprintf

(PHP 5)

fprintfWrite a formatted string to a stream

Опис

int fprintf ( resource $handle , string $format [, mixed $args [, mixed $... ]] )

Write a string produced according to format to the stream resource specified by handle.

Параметри

handle

A file system pointer resource that is typically created using fopen().

format

See sprintf() for a description of format.

args

...

Значення, що повертаються

Returns the length of the string written.

Приклади

Приклад #1 fprintf(): zero-padded integers

<?php
if (!($fp fopen('date.txt''w'))) {
    return;
}

fprintf($fp"%04d-%02d-%02d"$year$month$day);
// will write the formatted ISO date to date.txt
?>

Приклад #2 fprintf(): formatting currency

<?php
if (!($fp fopen('currency.txt''w'))) {
    return;
}

$money1 68.75;
$money2 54.35;
$money $money1 $money2;
// echo $money will output "123.1";
$len fprintf($fp'%01.2f'$money);
// will write "123.10" to currency.txt

echo "wrote $len bytes to currency.txt";
// use the return value of fprintf to determine how many bytes we wrote
?>

Прогляньте Також

  • printf() - Output a formatted string
  • sprintf() - Return a formatted string
  • sscanf() - Parses input from a string according to a format
  • fscanf() - Parses input from a file according to a format
  • vsprintf() - Return a formatted string
  • number_format() - Format a number with grouped thousands

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User Contributed Notes 1 note

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1
Julien MOREAU
1 year ago
If you use the command line interface (CLI SAPI), you may be interested by the 3 standard input/output streams (STDIN, STDOUT & STDERR) described at: https://www.php.net/manual/en/features.commandline.io-streams.php
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